Your inflation math is wrong. It's essentially the compound interest equation. 4.8% inflation per year gets you to 10 times for gas prices over 50 years:

1.048 ^ 50 = 10.43

If the current inflation rate holds, it would take over 230 years to inflate prices 10 times.

We're flying electric helicopters on Mars yet you can't turn on your clothes dryer in Texas. That's because scientists are in charge of Mars, and Republicans are in charge of Texas.