Option 4, this does not apply to my state as no special licenses are needed to drive any size motorhome here. I do think this could be a good feature, though I would be concerned about liability.
2002 Safari Trek 2830 on P32 Chassis with 8.1L w/ 400 watts solar 420Ah LiFePo4
2017 Jeep Cherokee Overland & 2007 Toyota Yaris TOADs with Even Brake,
Demco Commander tow bar and Blue Ox / Roadmaster base plates