Remember this head design I made way back? http://www.furaffinity.net/view/7794074/
Decided to make her into a character.

Full name: Street Grinder
Nickname: Grinder
Faction: Autobots
Sub-faction: none
Alt form: Earth convertible sports car

Hailing from one of the Autobot colonies founded after Cybertron's shutdown, Street Grinder was notorious for her obsession with speed and racing-barely anyone could keep up with her. Incredibly fast and agile, her abilities have proven to be useful in fighting Decepticons, but also gave a lot of headaches to her superiors-due to her impulsive, free-spirited nature she hated being bossed around. Having beaten all the racing competitors in the colony and chasing off pretty much every Decepticon, Street Grinder was growing more and more bored with each passing day-until hearing news about Team Prime's battles on Earth, a small, remote planet. Not willing to miss the opportunity after hearing that Optimus is seeking for reinforcements and is inviting any Autobot to come, she stole one of the ships and headed straight for the Blue planet. On her way there she ran into three more Autobots-an Aerialbot named Wingbomber, a brash but friendly fellow racer Booster, and an aging weapons expert Lock On.
As mentioned, Street Grinder is quite impulsive and hates being ordered around-even by someone as legendary as Optimus Prime. But when situation calls for it, she's willing to do anything as told if it means helping out her fellow Autobots. Her incredible speed, combined with her strength and firepower, make her a credible threat in the battlefield for any Decepticon that gets in her way-be it close range weapons or Energon blasters, she'll be done with them in short ammount of time.