Rather than having incidental music composed and arranged specifically for the cartoon, this is one of six Warner Brothers cartoons featuring a non-thematic stock soundtrack due to a musicians' strike. It was scored by John Seely of Capitol Records using stock music from the Hi-Q sound library.
Lots of allusions to the space race here, as befits the era.
Vitamins R+P+M is a play on the term rpm (Revolutions Per Minute), used in phonograph record manufacturing (33 1/3 RPM for long-play records, 45 RPM for singles, and 78 RPM for older recordings). RPM is also a popular term in the automotive industry, in which it is one factor engines are rated on - their top RPM - the higher the RPM, the faster the engine (or car) will run.
One of the few times Roadrunner is shown eating something other than bird seed. He's nibbling on a green plant here that has small red berries.
Gorgeous and fanciful renditions of the red rock formations unique to the American southwest are one of the hallmarks of cartoons from this era, along with Acme products and modern vehicles of all types, including the speed boat shown here.