MySims Racing is scheduled for a June 19th release date. EA has just released a list of powerups for the game

Power Ups:

• Melon Accelerator - The Melon Accelerator fires a watermelon that hones in on the closest opponent ahead and sends him into a wipeout upon impact.
• Pumpkin Catapult - This lobs a big pumpkin ahead of you, creating an ultra-slippery puddle of goo that’ll make opponents spin out of control.
• Beehive Trail - A trail of hives full of honey are released behind your car and will slow down any opponent that drives into them.
• Soccer Balls - This allows you to shoot up to three bouncing Soccer Balls. Any opponent hit by one of them will go into a wipeout.
• Bubble Dropper - Any car that collides with a bubble becomes trapped inside it, hovering in the air for several precious seconds as opponents zoom by.
• Seed Thrower - This will shoot out a seed that will turn into a fully-grown tree as soon as it hits the ground, creating a potential obstacle for opponents.
• Force Field - The Force Field surrounds your car with sturdy shields that keep you safe from most items for a short time.
• Tornado Inverter - This will turn the view of opponents ahead of you upside-down for a limited time, making it harder for them to maneuver their vehicles.
• Bunny Luv - This power-up summons a cupid-like bunny to shower opponents ahead of you with love, temporarily blocking their field of vision with a multitude of hearts.
• UFO - Using the UFO will allow you to get a free ride as it zooms along the race track.
• F-Energy Zap - This will send out a burst of F-Energy, overloading the engines of opponents ahead of you to temporarily reduce their speed and prevent them from boosting.
• F-Energy Storm  - Your boost meter fills with large amounts of F-Energy for a limited amount of time. Use it while you have it!