[Animats]

> 30 years of expected support is pretty unreasonable.

I happen to know, having been with a Ford unit at the time, that the Ford EEC-IV engine control unit in 1980s Ford cars and trucks was designed for a 30 year lifetime. Many are still working.

The average age of light vehicles in the US is 12.2 years.

This is more in NHTSA's wheelhouse, though.