It does work for fame... When you hold your mouse on the "Countdown" you will see how much fame it gives you... but the Junkmobile dosent give you any fame :)
And a question, does the time to buy as example the next Driving update calculate the time with the current amount of mechanics or does it calculate it with the growing rate?
It would be great if you could "fix" the early game.... I'm also playing on Google Playstore and have like 10 * 10^200 $ and now I started on kongregate because of an other game... And it takes ages untill you can make your first reset and realy get into the game... would be great if you could speed up the early game a little bit :)