Gladiator - Takedown every racer at least once in a single race
The easiest way to take down an opponent is to ram them towards a wall. It doesn't take much to earn a slam takedown this way, especially in heavier cars.
An easy event to get this on is the "Stopping Power" circuit race, as there are only 3 opponents. All 3 will start just ahead of you. Catch up to the closest one and bump them into the wall. You'll know you've taken them out if you get a takedown notification in the middle of the screen. Repeat with the next 2 cars.
If you mess up, you can restart the event and quickly try again.
Cars with access to this event:
McLaren MP4-12C
Lamborghini Aventador
Bugatti Veyron Super Sport
Pagani Huayra
Note that they are all Most Wanted cars, so you don't have to worry about finding Jack Spots for them.
