The Koenigsegg Regera is unlike any other car ever built. The hybrid hypercar makes 1500 horsepower, all of which goes to the rear wheels. It's so chock-full of wild, innovative, outrageous engineering, when we first saw the car in person, we had to have founder Christian von Koenigsegg give us a tour of its many amazing features.

But you might be surprised to discover that this sci-fi supermachine shares a lot of its drivetrain design with the decidedly more pedestrian 2017 Honda Accord Hybrid. Chiefly: Neither the Koenigsegg nor the Accord has a conventional transmission.

In the latest Engineering Explained video, host Jason Fenske explains exactly why Koenigsegg and Honda decided to skip the transmission entirely on their latest hybrid vehicles (and to be clear, the two automakers seem to have come to this engineering solution separately). Both cars feature an internal combustion engine (a 5.0-liter twin-turbo V8 for the Swede, a 2.0-liter Atkinson-cycle four in the Accord), but the pistons serve to power the electric drive system, rather than a conventional transmission. And in both cars, when the vehicle's traveling at highway speeds, a clutch engages so that the engine is directly driving the wheels.

So, if you end up buying an Accord Hybrid, you can brag to your pals that it's got the same basic drivetrain layout as a Koenigsegg. If you buy a Regera, you probably won't be tempted to point out the similarities.

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