Howdy!
The tax-&-registration expenses are set depending on where the vehicle's owner chooses to call "permanent address". Many Winter Texans find that these costs are lower in south Texas (where most of the Winter Texans live for 6 months) than in their northern home states, so they register in s.Tx for their "home address". Here in the more expensive Metroplex, people w/ lake homes, no matter how tiny, in another county will claim the cheaper place as their permanent residence, saving $$$ on the tax-&-registration & insurance.
Face it, Jeanne, you can RV it, but you can not hide!
R/S