What I find strange is that some states do not care about your physical ability to drive any vehicle. With my airplane, I have to get a flight physical every two years and get a review with an instructor pilot every two years. I also have to be current to carry passengers. With my Florida driver's license, it is valid until I am 82 years old. There was no physical exam, not even an eye test, and it was renewed online and good for 8 years. In Florida this allows me to drive ANY RV regardless of length or GVW. The funny thing is that I can legally drive a 45' motor home but to drive a motorcycle I have to get a special endorsement.