Hybrid vehicles use different types of power, including electric
Yes but can you also have hybrids using different types of fuels
There are also plug-in vehicles that can be recharged, that may be either all electric or battery-electric
I believe Mercedes had a charging system that was related to the breaking system.  Very new at the time
That feature may have been new, but the concept of hybrid electrical vehicles has been around for more than 100 years
True wasn't the first vehicle a motorcycle
I believe so. Now there are electric trains, underwater vessels, aircraft and spacecraft. It has come a long way. 
But are they truly economical and environmentally sustainable  as people believe