Well maybe not forever, but at least as long as I am able to drive him... that's why I am going through all this work to coat everything with POR-15.
I spent the day removing the undercoating from the passenger side rear wheel well. There were many points during the day when I considered just lighting it on fire and calling it good.
I ended up using Zip-Strip as I did on the driver side wheel well. The only difference was I had not experimented with three different removal methods before trying Zip-Strip on this wheel well. Needless to say the undercoating on this side was much thicker when I started.
Below is the passenger side wheel well (with undercoating removed) waiting to be cleaned with MarineClean. I took this picture at 5:00PM.