Tell me about the longest car you've ever driven?

The oldest car I have ever driven is 1987 BMW e32,735,735 Li, which was a car many years ago. A friend's uncle bought it in Shenzhen and drove it back to the northeast for nearly 3 thousand kilometers. The car is too old, and the formalities have long expired, but the machine of that car is really awesome. We went to Shenzhen together when we picked up the car. I remember that when we entered Shenzhen, we had to go to our local public security frontier detachment to apply for a border defense certificate. When I came back, I drove almost 1000 km on the g2 Beijing-Shanghai Expressway. To be honest, I don't know what to do. I'm afraid I'll throw it on the road and attract high-speed traffic police patrolling. But the car stopped and drove all the way to the northeast, except for adding antifreeze on the road. It's really not noisy, but it's too expensive. 100 km used almost 20 liters of oil. My friend's uncle still drives that car, but it won't be on the road for long. It's a collection ?