How the hell do I control the game using the Xperia Play?

I’m glad you asked. The in-game controls for Carmageddon are:

• Steering – Left button & Right button
• Accelerate – Cross button
• Brake/Reverse – Square button
• Handbrake – Circle button
• Repair – Triangle button
• Pause – Start button/Select button/Game Menu button
• Recover – R button
• Change Camera – L button

The out of game menus are controlled by touching the screen.