There is going to be several parts to this question, and yes you may use google.
1 What country makes the claim of having the first gas-powered vehicle?
2 In what year was this self-propelled vehicle built?
3 What kind of vehicle was it?
4 What was the size of the engine? How many HP?
5 What did the engine drive to drive the vehicle?
I think there might be some debut over this we will see.