Get a fun car that can be a hacking project :)

I was suggested a police car by a friend. They are cheap at auctions, more or less well maintained (tax payer money) and have interesting internals (check sites like https://www.dippy.org/upgrade/dipcop.html) especially for electrical circuits where a police-taxi-module lets you hook up to other functions.

And the laptop mount is a geek dream: your laptop right by you, charging, which doubles as a make-do coffee table at the drive through :)