To give you a serious answer. All machines in existence have very low efficiencies which means that if you give them 100% energy as input (from battery or fuel) they will give you 40% back as useful work (turning wheels) and waste the remaining 60% in heat, friction, energy transfer etc. This applies to wind turbines as well. Your wind powered bus is trying to achieve the impossible by thinking of giving 100% in input from wind and wanting to get 200% as output. If such magic (output larger than input) was possible, people could start a generator with an engine, use its electricity to run an electric motor and then use that electric motor to run the generator instead of the engine. Generator producing electricity to run a motor and the motor running to keep the generator producing electricity. If you are educated, I hope you did not read physics because otherwise our institutions are completely broken if they can't teach the basics of machines.