Having driven both, Nevada roads are no where near at the level of the Autobahn and also the distances between services in Nevada can be as much as 100 miles and much of that is in the dessert. Having said that, I have driven over 120+ mph on Nevada's roads with no issues.
trademarks are protected by the first amendment. see Barbie Girl case Aqua vs. Mattel. if you were a IP lawyer you would know that.
Not really, if you stir up the pot then you are likely to lose your trademark status. Going after phone carriers probably ok. Going after bloggers who gives you free advertisement. Probably pretty stupid move both legally and in the business sense.