Dan Neil on two modes of 1-hp urban transit: the ELF velomobile, a solar-powered car and bike hybrid, and the A2B electric bike. ROB COTTER, A FORMER performance engineer and top-gun tuner with ...

The more horsepower a car has, the more it can also combat air ... The current F1 power units have 1.6-liter 90-degree V6 turbocharged engines with an 80mm bore and 53mm stroke and two electric ...

Just pipping the Chiron by 1 hp/liter is the nutty McLaren 765 LT. Its 4.0-liter V-8 offers up 754 horsepower, and in a car that's 176 pounds lighter than the 720S on which it's based, it's way ...