For an 80 year old, you still have some options in transportation. But realistically, how many years do you expect to be driving?
I would tell you to buy that Honda Accord or Toyota Camry and just drive it as long as it's reliable--which means it may be your last car. Properly maintained, either will go 250K or 300K miles.
I have leased a number of cars over the years--but they were especially incredible lease deals supported by manufacturers' incentives.
Now that I'm retired, I just choose my cars carefully for dependability and low depreciation. I'm now running a Lexus IS and a Honda Civic--along with a diesel Ford F250. And I've not had a single warranty claim in the last 550,000 miles driven--which means cars have never been more reliable.