In a car, you control the throttle with your foot and shift gears with your hand. On a
motorcycle it’s the opposite. And with good reason. Even if you could fit a car-style shifter on a bike, it would be way too dangerous to take a hand off the handlebars to operate it. That pretty much sums up two-wheeled motor vehicles, vis-à-vis the four-wheeled ones: the same main parts are there, but configured for a smaller, lighter, riskier space. Which makes the engineering all the more fascinating.