RPO - Really Poetic Options - It's a poem, written by an official factory poet, describing the vehicle. For Instance:
This Tracker's fair,
yeah, she's no bear
One point six liters,
she's no beater
sixteen valves too
she'll propel you
and teal green
metallic sheen
She's just a two door
with five on the floor
and factory air
she'll get you there
(OK, yes, I'm just kidding.)