Perfecting the Bicycle

Bicycles are strange. I understand how they are popular and fun, but it seems like we could develop them more. Having two wheels is fine, but it's a little hard to balance yourself on them. The tricycle is the right idea. But, why stop there? Why not put 4 wheels on it? That will keep it real sturdy. And a bicycle seat is kind of uncomfortable. Why not make it like a chair? Oh, and it also takes to much effort to pedal a bike uphill. Let's give it an engine to power itself. And, let's make it safe, give it seat belts. And extra padding. Now, what do you have? A bicycle I would drive.