Many of the Pokmon within the Dream World will have abilities that the Pokmon you transfer over from Diamond, Pearl, Platinum, HeartGold & SoulSilver don't normally have, such as Vaporeon with Hydration and Glaceon with Ice Body. A few are also available in-game and others through events.
Hybrid cars have smaller, more efficient internal combustion engines than conventional vehicles because the electric motor provides additional power when needed. The smaller engines produce less pollution. Gasoline engines in hybrids automatically shut off when stopped and restart when the accelerator is pressed.
Today there are numerous car manufacturers producing hybrid cars known collectively as Hybrid Electric Vehicles (HEV). They are all very efficient and although more expensive than a conventional car, they have proved to be of great benefit to the environment due to their reduced emissions into the atmosphere.