How about a Volvo or Mercedes diesel and a small trailer, that way you have carrying capacity in line with the S-10 and a car to use for long trips with 5 seats.
The cheapest thing to do is to buy a Volvo diesel estate, as they all have the bombproof 2.4 litre 6 cylinder VW made engine, then you have room for the bike in the back with the seats down. Then ask around local restaurants for waste vegetable oil and make yourself a biodiesel reactor like this one:
Biodiesel Appleseed Reactor Plans
This way no body chopping has to happen, and you can install some sort of electric fuel heater for winter and run all year round fossil fuel free, without having to worry about pushing food prices up.