Hacker News

In the US, public transportation is so bad that a lot of used cars come from rental companies. People fly somewhere and then literally need to rent a car to get anywhere from the airport. The rental companies tend to buy new cars and sell them around 40k miles.

Another big source of used cars is from people leasing their vehicles, then upgrading instead of buying out. It’s very common to find 3-year-old cars that just came off lease.

Both of those should be easy to incentivize - require rental agencies to maintain a high percentage of electric in their fleet, and make leasing electric cars significantly cheaper than leasing ridiculous SUVs - either by subsidizing them or by taxing the leases on high-mpg ICE vehicles.