I see too many people going to large gatherings and not using basic precautions. I sometimes bite my tongue(fingers), and move along, other times I'm more vocal about that being a Bad Idea©.
Mak10's trip is NOT this. You can safely isolate, distance and use some basic precautions when you can't distance. Holy cow, some of you need to go to West Texas to understand it's not that hard to stay away from people in Big Bend NP.
Or along the way. A little common sense goes a long way. Don't sit at a restaurant with a fan blowing across other tables at you. Wear masks if you go shopping, etc. Know that CV-19 is out there, you can't tell where/who and be smart. That doesn't mean hiding under a rock.
In terms of the Tercel, it's a Toyota. If it's basically sound, just go. Maybe check up on your towing policy(ies), or spring for a year of AAA for one of you, (maybe a nice present for the daughter?). Even AAAPlusRV for moto coverage isn't really that expensive in the grand scheme of things. And check out
Allstate Motor Club as an alternative. Better in some ways, about the same cost. We have both. 142k? It's barely broken in!
Take some basic tools with you. I've swapped a thermostat in the auto parts parking lot more than once. Beats driving with the windows down and heater blasting.
You likely have a mini compressor and tubeless flat repair kit on the bike. Works great on car tires too.
A little prep, maybe an hour of preventative maintenance, pack the car and go. You don't get opportunities like this so often with adult kids.
Go. Have a great time.
And
@ballisticexchris - You shared your opinion, now move along. Repeated posting of the same basic opinion won't change anything.
Edit - Check the weather forecast! It's 18F in Big Bend today. We have a friend that lives there. They had to close the park for a bit due to the snow. First time in years it's snowed like that. Should be melting off and likely be fine by the time you get there, but do you're own research on NOAA and other sites.