Record pricing for used cars suggests that there's a car shortage.
Ironically, less cars and less driving could lead to
1. Faster driving because of clearer roads, and
2. More walking.
Combine those and it wouldn't be surprising to get more auto-pedestrian accidents.
One test would be to compare changes to car accidents with changes to pedestrian accidents. Reckless driving should bring both up. More pedestrians should only bring the latter up.