AdamSmith wrote:
Gasoline is NOT subject to the same laws of supply and demand because THERE IS NOT ALTERNATIVE.
If Nike can sell a running shoe for $80, then they up the price to $120, if I decided that is too much, I can go to Puma, or addidas, etc.. and buy a running shoe for $80 or less.
There is NO readily avaliable reliable alternative to gasoline.
The fact that gasoline has a fairly inelastic demand doesn't mean that it isn't subject to the laws of supply and demand.
As far as your running shoe example goes, you can run less, just like you can drive less.