If you need to move up to a cubic yard of material or just an additional four people, I recommend a 2007 Chevy Avalanche. It's both a full-size pickup truck and a luxury SUV. With leather, heated seats, front and rear personal A/C, 6-disc MP3 changer, and cup-holders galore, you can feel at ease and get work done.
The great and unique thing about the Chevy Avalanche is that it's a transforming vehicle. The default cargo space is already a whopping 46 cubic feet, but with a few changes the back seats come down and the back window is tucked away, provides more than enough area for a full 8 x 4 foot sheet of plywood.
The vehicle is located within walking distance from the Sunnyvale CalTrain station