【Watch Psych 2: Lassie Come Home Online】

Hummers are Watch Psych 2: Lassie Come Home Onlineback with a jolt.

General Motors' Hummer vehicle line ended in 2010, but this weekend it'll return with an electric twist.

The massive vehicle is now an all-electric SUV from GMC. During Sunday's Super Bowl game an ad will reintroduce the world to the revamped vehicle.

The 30-second ad will play during the second quarter, so don't mute the commercial breaks.

The car itself will be unveiled on May 20. Production will be at GM's Detroit Hamtramck assembly plant, where GM is creating an EV-only factory. A possible 2022 arrival was rumored in a Wall Street Journal report. That timing matches almost too well with Tesla's first electric pickup, the Cybertruck.

The ad is supposed to show how fast, quiet, and powerful the EV will be, with specs like 0 to 60 mph in three seconds.

Some YouTube clips posted Thursday give some teasers about new car:

For anyone trying to get a better look at the car, GMC only shared some dark, shadowy front grille footage. But it's something:

As to NBA star LeBron James' apparent involvement in the Super Bowl ad, we'll have to watch Sunday.

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