Shop-Vac out into the driveway, hooks it up to an extension cord, and vacuums. It takes forever to set up and the Shop-Vac takes up so much room!
I found this Mini Vac from Brookstone. This looks great! He can keep it in the trunk of his car and use it whenever he wants to. It has an extra-long cord that makes it unnecessary to be close to an outlet. This is a sturdy hand vacuum that doesn't take up a lot of space. It's only about three pounds but has amazing power. There are great accessories that come with this Mini Vac that includes a crevice tool, a dust brush, and an upholstery nozzle. This won't just work in the car, but would be great for a camper or RV, an office, or any other small space that needs a little touch up.