They tested that thing at the White Sands Missile Range where the public is excluded.
A friend of mine was looking for a stargazing spot between WSMR and the Rio Grande River a fair bit south of San Antonio, NM and got her Chevy Blazy stuck and figured her best bet was to walk across the security perimeter and get caught by the security force and they caught her pretty quickly.
TIL San Antonio is not just a city in Texas where I live, but also a place in New Mexico. That's crazy.
This strategy went very poorly for the Death Valley Germans https://news.ycombinator.com/item?id=34676129