1927 Ford Model T Bucket Rat Rod Hot Rod on 2040-cars

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Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.

Carmakers, NHTSA to unveil auto-emergency braking agreement tomorrow

Happy St. Patrick's Day Eve. Tomorrow, there will be green beer, corned beef and cabbage, and automatic emergency braking for all. Weird combo, we know. But on St. Patty's we can expect an official announcement from a pact of automakers making auto-braking systems standard equipment by 2022. That's per a report from Reuters, which cites three sources familiar with the plans. Originally announced in September 2015 by 10 automakers and the National Highway Traffic Safety Administration, the agreement is expected to be even larger when the details are unveiled tomorrow. According to Reuters, the manufacturers of 99 percent of the US domestic market's vehicles will be represented by the new agreement. It's believed that standard AEB systems could prevent thousands of accidents across the country. Expect more on the official announcement when it's made. Related Video:

Hot Wheels' 2022 Green Speed cars bring EVs to small scale

With more and more EVs hitting the market, it was only a matter of time before the new breed of cars would find representation in diecast form. For 2022, Hot Wheels is coming out with a new Green Speed series that puts the spotlight on a diverse lineup of electric cars. The five-car series features a fun mix of EVs from different manufacturers and in a wide range of styles. Some are completely bone stock. For a traditional luxury sedan, there's a Lucid Air in silver, complete with glass (or in this case, clear plastic) canopy. For fans of Teutonic 4-door "coupes" there's the Audi RS e-Tron GT in Daytona Gray. Ticking the truck box is a Hummer EV in a yellow that can only be described as a throwback to the H3. But because this is Hot Wheels, there are "hot-rodded" variants in the lineup as well. Rather than just a regular Nissan Leaf, they've elected to cast the carbon fiber-bodied NISMO RC 2.0 race car. Likewise with Ford, instead of the standard Mustang Mach-E, they've gone with the Mustang Mach-E 1400 drift car. This isn't the first time Hot Wheels has put out a Green Speed series. The line debuted in 2016 but reflected the limited EV choices in the real car market at the time. The only non-fantasy cars in the series were a first-gen Tesla Roadster, a Tesla Model S, and Chevy Volt. Hot Wheels revisited the line again in 2019, this time adding a Tesla Model 3 and a Porsche Panamera Turbo S E-Hybrid Sport Turismo. Hot Wheels also makes other mini EVs that don't fall into this specific line of models. If you want to collect 'em all, there's the second-generation Tesla Roadster concept, Cybertruck, Jaguar I-Pace, Pininfarina Battista, Porsche Taycan, and a Volkswagen ID R. Similarly, Matchbox has released a version of the Tesla Roadster with sustainable packaging to boot. If you must have an old school gasoline burner, Hot Wheels has plenty of options for you too, like, say, this snazzy FJ60 Toyota Land Cruiser. The 2022 Hot Wheels Green Speed series should be on shelves at your local retailers now. Related Video: