In the UK, there are a few restrictions about the vehicle used for the test. It has to have all-round visibility, so no cabrios, and it must have head restraints on the seats and seat belts, so the De Soto would be out, I'm afraid.
Once the test is passed though, that's it. We renew a photocard licence every 10 years, to renew the photo, but our driving entitlement is permanent. At 70, we have to sign a declaration of fitness, self-certification, so open to abuse, and renew this every three years, no tests unless ordered by a court after a driving incident.
There are often calls for older people to be retested, but statistically they are involved in few collisions, possibly due to driving more slowly, but also due to driving less. It is easy to identify older people driving poorly, but I believe that the majority of these have always driven poorly, their age is a contributory factor in their poor decision-making, but not the root cause.
There are also calls for retests of everyone every 10 years, but the test is one of ability. The poor driving we see is mostly about attitude, which can be turned off for the test.
I met a few Indian guys recently, one described his driving test in India:
Move away from the side of the road and drive to a roundabout about 100yds away. Circumnavigate the roundabout to drive back down the road you approached on. Continue to the next roundabout, about 200 yards, around that and return to the start. Done.
A guy from Burundi (Somewhere in Africa), described his test as, "not as high a standard as the UK". I quipped, "as long as you don't crash?". His reply, "No, as long as no-one goes to hospital." That's a good standard.