2. We invent a MINI SMOG VACUUM CLEANER and subtly put it in the places that people live their life at daily basis.
Such as:
The bottom of a shoe! The more they walk, the more smog their shoes suck.
Their cars and public cabs. The further they go, the more smog their vacuum machine absorbs.
Smog
Shoes Cars
Full
3. When their machines get filled up,
they can redeem the smog into
less polluted incentives like:
spa voucher,
shopping discount,
or movie ticket, etc.