I think I've decided to use a Mini-ITX solution rather than a laptop. I believe that involves more electrical work, but I'll have help with that.
The other thing I just thought about was because my Impala has a big old backside, I want a rear view camera to help me with backing.
Also, another thing I was pondering. I know Laser systems that detect speed use an Infrared beam that reflects from the car back to the unit (I have some experience in running radar and laser from my job ;-)). I was thinking, I can probably fabricate an IR flooder that can be controlled via a small PCB, mounted to the car in strategic spots that could, in fact, cause the infrared signal sent back to the lidar unit to be false...
It's just a thought, but one that could make a pre-fab type of laser jammer that actively syncs to a carputer. I wonder if there'd be any demand for that, considering the amount of fabrication work that would need to be done to the body of the car to make it look less like a frankenstein mash of electronics and more like the stock body.