One thing I'll mention is that you want to be careful about how much money you sink into your vehicle. Cars in Shadowrun tend to get wrecked up a lot, and it hurts as a rigger to cross off your pimped out westwind because it got wrapped around a lamp post and hit by an RPG.
That said, the vehicle I keep coming back to as a rigger is the humble GMC Bulldog. Common enough that no one will look at it twice, lots of room for drones, teammates, gear, ect. Put a Chameleon coating on it, Gridlink Override, Oil Slick Sprayers and a Morphing Plate and you'll be good to go.