are motorbikes faster than cars

Short answer: in a straight line, superbikes often feel faster; in the real world (and on a racetrack), top cars can be faster.

A modern litre bike can hit 0–100 km/h in ~2.7 s and top out around 295–305 km/h, thanks to featherweight mass and silly power-to-weight. But hypercars and top EVs launch harder with massive tyres and traction control—some do 0–100 km/h in 2.0–2.5 s and push beyond 350 km/h. Through corners and under brakes, cars win via downforce and four big contact patches, so lap times usually favour the car. So yes, bikes are blistering in sprints; no, they’re not universally “faster.” And whichever you pick, the speed limit remains tragically the same.