I also used a Verizon 3G card when traveling by RV and it worked most places in the Western US. Many highway rest areas have cell tower sites right next to them

I also used a Verizon 3G card when traveling by RV and it worked most places in the Western US. Many highway rest areas have cell tower sites right next to them which ensures a good connection. If satellite Internet will work for you, there's always MotoSAT (motosat.com). I was a beta tester for this setup back in 2001 and it worked very well.