The problem isn't the cars. The problem is that we don't all live in some fantasy where people have time to sit down and eat their food and drink not on the go. If it wasn't the straws people would be complaining about the plastic coffee cup lids.
This might be a USA thing but a lot of times in restaurants they’ll bring me my drink with a straw in it and I can’t help but think “WTF do I look like a six year old?”
Something made of cellulose that breaks down more easily would be better, so long as it comes from agricultural byproducts.
*edit I’m saying this might be better because some light plastics like straws end in in storm drains and on road sides, so something that breaks down over time into organic compounds might be preferable.
And later cultures could dig it up and burn it, if they wanted to.
Stones stay around for a long time, too, but no one cares. (And fire can destroy plastic easily.)
Drinks with takeaway food here have been using that style of cup for years now.