They named the band REO Speedwagon, from the REO Speed Wagon, a flatbed truck Neal Doughty (keyboards) had studied in transportation history while in college, and the initials are those of its founder Ransom E. Olds (before he started Oldsmobile). Rather than pronouncing REO as a single word as the motor company did, they chose to spell out the name with the individual letters each pronounced ("R-E-O").
Did they get that name from the anime or vice-versa?