You get tax credits for this being your home, not car, and insurance drops a lot for an RV or Motorhome. You don’t live in the vehicle, it is a recreation vehicle. Also get tax credits for installing solar panels. If you use van for work, you get deductions.
There are four states with no sales tax: Delaware, Montana, Oregon, and New Hampshire. A fifth, Alaska, has no state-level sales tax but allows municipalities to impose the retail-level tax. As a result, the average sales tax rate in Alaska is 1.69%
Seven U.S. states currently don't have an income tax: Alaska, Florida, Nevada, South Dakota, Texas, Washington and Wyoming. And residents of New Hampshire and Tennessee are also spared from handing over an extra chunk of their paycheck on tax day, though they do pay tax on dividends and income from investments.