Okay, General Motors->ke1024 is up to something, but it’s not telling us. The only bit of information it let out of the bag is that it’s investing a huge sum of money into its Orion plant in Michigan to help with the launch of an “all-new vehicle.”

How much money exactly? A grand total of $300 million, which works toward GM’s goal of $5.4 billion by the end of 2015. This will put the company just $2.3 billion short of its goal with just over six months left to go in the year.

Other than these details, GM didn’t reveal anything else. It didn’t even give us a teaser of what it is working on at the Orion plant. We already know that GM will build the Bolt in this plant, but it has already lumped $160 million into the plant to aid in the release of this 200-plus-mile EV.->ke1030 So, what in the world can GM possibly be working on?

Other than the upcoming Bolt, the only other two vehicles currently in production at Orion are the 2014 Chevy Sonic and 2016 Buick Verano. Neither of these models are due for any changes soon, and GM was pretty adamant that there will not be a hot hatchback->ke304 model, so that all but eliminates the Sonic->ke3744 on the surface.

Continue reading to see what I think GM is up to, then let us know in the comments what you think the automaker is hiding from us.

Why it matters

Personally, I think GM is full of dookie when it denied a high-performance compact car so intensely. In fact, I think its strong denial based on unfounded claims only strengthens the possibility that a high-performance compact car->ke140 is in the works. This $300 million can easily take care of all the tooling and adjustments needed to accommodate a Sonic SS. Just imagine the roughly 2,700-pound Sonic hatch with a 200-horsepower engine under its hood; it would be glorious!

Adding even more fuel to my speculation fire, nearly every image that GM included with the press release announcing this upgrade was of the Sonic.

Does that mean GM will actually do it? I really don’t know. I guess we’ll all just have to wait and see.