The Google Play MotorMaker link is:
https://play.google.com/store/apps/details?id=net.summertm.android.motormaker&hl=en_GB

OK, MotorMaker is finally out on Google Play.
Try it and let me know what you think.
I hope to add more sound effects and perhaps music before I start on version 2 which will have a test track racing component.
There will be a steep learning curve for that, as I have never produced a complex real time graphics/racing game before.
Mike

MotorMaker  is finally ready for release after 6 months of dedicated effort.  It will appear on the Android Play Store this week hopefully.  We just have to get this website to a usable state and prepare the release documentation.
The idea for the game came from my Top Gear addicted grandson Dylan, or Slid as he's known to me. My addiction being coding, it seemed obvious we should get together to make something brilliant.  And here it comes...