Dear Santhan,
1. Boy, what a lousy translator I am ! I really have been thinking that during the European Tour, Gloria and you were sleeping in a motorhome, meaning a home for guys who ride motorbikes ( something like Heaven's Angels) !!! :):):)
2. I like those vehicles and I have a serious idea : when you are going to use biodiesel, get in touch with a firm who likes to see his company's name on the side of the bus. You advertise for biodiesel, that's a good cause, I would say, and they sponsor you for having their name on the vehicle !
God luck,
Anco