1998 Jeep Cherokee Classic Sport Utility 4-door 4.0l on 2040-cars

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Watch this 650-hp Hennessey Jeep Grand Cherokee go from 0-60 in 3.9 seconds

Hennessey Performance Engineering has created an HPE650 package for the Jeep Grand Cherokee SRT fitted with the 6.4-liter Hemi engine. When it leaves the showroom floor it has 470 horsepower and gets from 0-60 miles per hour in 4.8 seconds. When it leaves Hennessey's garage floor after the upgrade it has 650 horsepower - 530 hp at the wheels, according to Hennessey - and gets to 60 mph in 3.9 seconds on its way to running the quarter-mile in 12.6 seconds.
There's more than just a Roots-type supercharger bolt-on, with ported cylinder heads and high-flow headers among the many changes made to the engine. You can watch this pre-2014 facelift silver model prove its spec sheet on the drag strip in the video below.

FCA's shifter fiasco proves novel gear selectors are a bad idea

What's wrong with PRNDL? Why are automakers trying to overly complicate the simple task of selecting gears? If there's any lesson to learn from the recent news that NHTSA is investigating 853,000 Fiat Chrysler vehicles over its problematic gear selectors, it's that the trend of fancy shifters needs to stop. Now. Last year, NHTSA opened an investigation into Jeep Grand Cherokee models, and has now expanded this probe to include the 2012-14 Chrysler 300 and Dodge Charger. The problem? The shifter – assembled by ZF – is confusing for many drivers. "Testing ... indicates that operation of the (electronic) shifter is not intuitive and provides poor tactile and visual feedback to the driver, increasing the potential for unintended gear selection," a NHTSA document states. More than 100 crashes and over a dozen injuries are linked to this problem, according to The Detroit Free Press. To us, the problem isn't just limited to FCA. These unnecessarily novel gear selectors are spreading like wildfire across the industry. Honda and Acura use a weird pushbutton setup. Lincolns have buttons on the dashboard. Jaguar's shifter electronically raises out of the center console. Mercedes uses a stalk with up-for-Reverse, down-for-Drive, push-for-Neutral arrangement. And what the hell is BMW thinking with its M cars? FCA has since abandoned the confusing shifters in question. The 300, Charger, and Grand Cherokee now use the rotary shift dial that's quickly proliferating across the company's brands. Simplistic gear selectors might not be sexy, but no one ever complained about not being able to find the right gear in a Hyundai Sonata. What's most interesting is that this NHTSA investigation could push FCA – and possibly other automakers – to redesign vehicle functions that otherwise operate as designed. Just because most people will never have a problem putting a Dodge Charger in Reverse doesn't mean there isn't a flaw with the design. But perhaps a more simplistic solution – good ol' PRNDL – would have prevented these issues from the start. Related Video: News Source: The Detroit Free PressImage Credit: Copyright 2016 AOL Government/Legal Chrysler Dodge Jeep FCA shifters

Poor headlights cause 40 cars to miss IIHS Top Safety Pick rating

Over the past few months, we've noticed a number of cars and SUVs that have come incredibly close to earning one of the IIHS's highest accolades, the Top Safety Pick rating. They have great crash test scores and solid automatic emergency braking and forward collision warning systems. What trips them up is headlights. That got us wondering, how many vehicles are there that are coming up short because they don't have headlights that meet the organization's criteria for an "Acceptable" or "Good" rating. This is a revision made after 2017, a year in which headlights weren't factored in for this specific award. This is also why why some vehicles, such as the Ford F-150, might have had the award last year, but have lost it for this year. We reached out to someone at IIHS to find out. He responded with the following car models. Depending on how you count, a whopping 40 models crash well enough to receive the rating, but don't get it because their headlights are either "Poor" or "Marginal." We say depending on how you count because the IIHS actual counts truck body styles differently, and the Infiniti Q70 is a special case. Apparently the version of the Q70 that has good headlights doesn't have adequate forward collision prevention technology. And the one that has good forward collision tech doesn't have good enough headlights. We've provided the entire list of vehicles below in alphabetical order. Interestingly, it seems the Volkswagen Group is having the most difficulty providing good headlights with its otherwise safe cars. It had the most models on the list at 9 split between Audi and Volkswagen. GM is next in line with 7 models. It is worth noting again that though these vehicles have subpar headlights and don't quite earn Top Safety Pick awards, that doesn't mean they're unsafe. They all score well enough in crash testing and forward collision prevention that they would get the coveted award if the lights were better.