You gain $10 each kilometer you walk, but you have to drop your current job.
Rules:
You can still have income from investments or other means, but you cant have a job and you cant have a paycheck.
You can walk, run, jog, crawl, whatever you want, as long as its your feet touching the surface.
So you cannot use a bicycle, scooter skateboard, skates, etc. Heelys are allowed, tho (because i said so).
Flintstones car is fine too.
Edit: its US dollars and tax free
1km ~ 0.62 miles