Photographers Jenn Ackerman and Tim Gruber are right there in the middle of it, even hopping into the passenger seat for that perfect shot.

The Minneapolis husband and wife team first learned about the sport in 2013. They came across a cardboard sign with the words "Ice racing" scrawled across and an arrow pointing towards a nearby lake. The pair decided to investigate, and burst upon a dozen or so cars barreling across the frigid tundra. They knew they had to find out more. "It was pretty organic," Gruber says. "Just stumble upon a sign and next thing you know, there's your next project."

The pair have since photographed around 10 racing events around northern Minnesota for their series Frozen Speed.