Toyota plans on launching the Next-Gen Prius by 2008. The engineers at Toyota are redesigning the entire electrical system and also plan on moving over to lithium-ion batteries instead of the NiMH packs which are being used at the momemt.
A car that actually gives 94mpg, look out competition. Not bad for Toyota, a company that has only been in the automotive industry for what 15-16 yrs. Now the real test will be when this Next-Gen actually becomes available, and we get to see the actual mpg results. Things tend to be a bit skewed whenever a car is put to the test under optimal conditions (which is a given for any test). So people who are considering converting they currnent Toyota Hybrids into a plug-in, wait a bit, you might end up saving quite a bit of money (plug-in kits cost about $12000 more).