Years ago. Was visiting a client on-site. Meeting ran late and had to race home. Popped into a 'natural' food store to get something. Grabbed a package of pre-made 'fresh' shrimp spring rolls out of one of those open coolers. Ate in the car.
A 1.5 hour drive turned into a four hour nightmare with all the unplanned stops.
Never again.
It's a tough call. Last bit of independence for someone feeling their world getting smaller. Anecdotally, both my father and father-in-law damaged their cars (one hit the highway median after dozing off) and their wives told them they couldn't afford to replace the cars. Fortunately, nobody got hurt but it could have been a lot worse.