Plug-in_hybrids
A highly instrumented 2004 Toyota Prius is tested at Argonne National Laboratory. Read the full story. Photo courtesy of Argonne National Laboratory.
Plug-in hybrid electric vehicle (PHEV) diagram
A plug-in hybrid electric vehicle (PHEV) is similar to a hybrid electric vehicle (HEV) except that it has a larger battery and can be recharged by plugging it into an electrical outlet for a few hours. View more about Argonne's transportation research at www.transportation.anl.gov. Photo courtesy of Argonne National Laboratory.