Interstate

[Sarah]

Pertaining to the mutual relations of States; existing between,or including, different States; as, interstate commerce. Story.

[Sarah]

A public Playground where people speed for fun.

[Ernesto]

n. American amateur raceway. Frequently becomes a [facilitator] for natural selection. Unfortunately, Interstate natural selections often involve normal drivers who happen to be at the wrong place at the wrong time.
Syn: [Darwins] [Little Helper]

[Hina Muqadas]

Existing or carried on between states, especially of the US.

[Gregory]

something that [crosses] two or more states
the name of a few [highways] in [the U].S.

[Britney]

involving two or more of the states into which some countries such as the US are divided: