Hyundai Prius-Fighter Hybrid spy shot

Hyundai is no stranger to the hybrid game, selling a gas-electric version of the Sonata in the US since 2011. The 2015-model-year version gets 38 miles per gallon combined, which is certainly admirable but not quite in the same league as the hybrid champion Toyota Prius (50 mpg combined). New spy shots reveal that Hyundai might be finally ready to targeting the non-plug-in fuel economy leader. Why else would some mysterious Hyundai prototypes be cruising through the desert hills with a few Priuses in tow?

Our photographers believe these mules hint at an all-new hybrid model, which makes us think of the Blue Will concept from the 2010 Detroit Auto Show. At the time, Hyundai said the concept could be a preview of a future dedicated hybrid that would compete with the Prius.

We don't know what it all means for sure, but our spy photographers found four heavily modified Elantra GT prototypes driving around with a standard Prius and a Prius V. As if that wasn't enough of a clue, the four changed Elantras represent different approaches Hyundai might be using to go after Toyota, since there were two versions driving by our photographer's lenses, with different rear extensions indicating that both the standard Prius and the larger V might be in Hyundai's sights.

Despite the inclusion of a battery pack and a high-voltage cable running under the car, there was no obvious sign of a plug, so the old rumors of a Sonata PHEV will likely remain in the dustbin for now. Unless that strange rectangle of tape on the gas cover is hiding something surprising, of course.