Possible dementia? I watched one of his speeches live recently and he randomly jumped backwards almost to the beginning and repeated himself without batting an eye at least twice. The creepy part was the reporters just ignoring it and continuing to ask questions as if nothing had happened.

This gif is so fun to analyze, in the show you only see the scene briefly so it seems just fine but the longer you watch it loop the more you notice the flaws that they could get away with in the format.

• Front wheels pop in and out of existence
• Horn on the top bounces upwards when facing away
• The antenna is always behind the bubble dome even when it should be in front of it
• Homer suddenly flips all the way backwards when the car is roughly facing to the right
• The entire scene is static except for the car itself and a single blink for Herb
• The spoiler slopes down when its on the left but up when its on the right

It got worse than this, the ticketing company really wanted to get the money from him so when he got hold of a copy of the records and pointed out that one ticket was for a completely different car they modified the records on their end to change the make of car so it would match his. iirc he only got out of it because he had paper copies.