I made a creeper a little while ago and then i thought that I could make it into a "Green Mobilized" Creeper. I want to mobilize the creeper but I will not use gas or at least will have much less fuel emition than a gas motor does i want it to be able to have me sit on it and be able to make it move around. Have any ideas

Have a look around for means of transportation for 1 person:

 

There's all kinds of (carbon based) fuel engines, and you might be able to transfer such a system onto your creeper. Make sure you do it safely (fuels can burn, some can even explode).

There's electric powered vehicles. Some bikes, scooters and mostly used in those things for the elderly. In any case, you'll need a pretty decent battery pack, and a good sized engine, or you'll look like a joke

 

I'd go for pedals (like on a bike) though. It's safe, simple technology, easy to fix and cheap too... and after all, muscle power is still the most used for 1-person small distance transportation of people.