This can be a very easy achievement if you have 2 controllers and can be done from the Play option of the game and doesnt have to be done on a set CC class.
Choose a race (Belgium is a good choice) and press to customise the race, change the Power-up Balance to Bubbles only and accept.
When picking your driver, choose Lewis Hamilton or Jenson Button as they can both swap their power-ups, the second player can choose any driver.
Whislt in the lobby change the setup so its set to teams have yourself on one team and player 2 as the other team, then start the race.
When the race starts, allow the CPU drivers to make there way off the line with player one following, player 1 grabs a power up and hopefully grabs a 3x Ricochet power up, if you dont get it, hold to change the power up, if your unlucky again driver to the next power up and so on until you get 3x Ricochet Bubbles
Try to parkthe 2nd player infront of the first, then with player 1, fire the Ricochet Bubble 3 times (pause before firing each one so that they each register).