How To Fuel a Propane Autogas Powered Vehicle 

I’m not sure about the U.S., but Chevy and other GM products have sold BiFuel cars for 15 years now in Europe. Even in small cars, like a Chevrolet Trax or even the Chevrolet Spark! The connector used in this video is the one they use in Belgium and Germany, for example (and Australia). Europe came up with a different, universal connector that slides into place (the euronipple) but so far only Spain and Portugal adopted it. And as strange as it sounds, the U.S. started using it as well. It’s called autogas in Europe and is probably nowhere near as popular in the U.S. because gasoline is very cheap. I think the best selling BiFuel vehicle in Europe today would probably be the RAM 1500 with the 5.7 L Hemi V8.

I'm pretty sure you have to modify it, but I do know you can buy ford vehicles with them already added from roush.

U-Haul