The game does allow you to unlock this trophy in arcade mode against easy computers.
Intentionally slipping back to 8th place by the end of lap 2 in a race against easy computers is your best bet. You don't even have to be far back in 8th place; it's simple enough to keep tapping the gas to stay pretty close to the easy computer in 7th place.
Don't give up if you fall off the map or get hit by items on your way to 1st; the easy computers give you many opportunities to catch up, especially if you drift boost.