Toyota is the world leader in hybrid cars, Smart taxis has
commited to replacing its entire fleet of taxis to run on CNG
instead of diesel as well as to build CNG filling stations. The
first will be ready by 2008.
BMW has the record for the fastest hydrogen powered car - although
the hydrogen still powers a combustion engine. Mercedes-Benz has
fuel cell vehicles on trial throughout the world. Fuel Cell A-Class
vehicles are running around in singapore - their exhaust is PURE
WATER, with zero harmful gases. They also have fuel cell buses,
vans, and even a yacht and are working to commercialise the
technology.
They kyoto protocol also seeks to address the global warming and
climate change issue and Singapore is commited to it as well.
Basically, steps are already being taken to curb pollution and
destruction to mother earth in other areas but smoking a cigarette
is still a personal decision -_-