When I was young, in the wild late-70s and '80s, my mom would make lunch and cook while traveling down I-95 on our annual trek from NJ to Florida. Heck my dad and uncle would switch driving while we were moving - set the cruise and change seats. Don't try this at home, kids.
Fast forward to 2019 where everyone has an opinion and everyone else is offended by it, yeah I'd keep a crock pot going on a long trip as long as it was secured to keep food from spilling everywhere. As far as flying around in an accident - it would just be one of dozens of things flying at me. I'd like to think "Man Killed by Flying Crock Pot" would amuse a lot of people and I'd rest happily.