ya. i never really thought about that much. i guess yor right,the lyrics arent really that random.
my full interpetation would be like:
He (ben or whoever the person is) is tired of being rejected by his significant other so he just starts driving.
"diners turn into space ports"
he kinda starts to doze off in the middle of driving, then
"Approach light speed, And break apart"
just makes me think he is tired of all this and he puts his foot on the gas and just starts speeding dangerously fast,
"i'll be in the wormhole soon"
&
"This planet was not made for me"
make me think that he is probobly gonna commit suicide.
which links me to car underwater. as he probly drove off a cliff or a bridge or so.
and that is my take on the song