Like any proper Dead Rising game, Combo Vehicles return in Dead Rising 4 and their blueprints are scattered around the map.
There are a total of 8 Combo Vehicle blueprints in Dead Rising 4, a couple of which are locked behind story mission progression.
Combo Vehicles are extremely powerful, and finding them is important for gaining large amounts of PP and greatly increasing your zombie kill count. I would definitely make finding these top priority for fast leveling.
Combo Vehicle Blueprint Locations
Bogey Monster (Golf Cart + Balancer) – Located inside of Homerunners in upper section of Caribbean Cove in Willamette Memorial Megaplex. You’ll find the combo vehicle blueprint on the counter.
Creep Fryer (Food Truck + Enduro Bike) – Located at Glitter Dolls Nightclub in North Peak, you’ll first need to find the key to the Zom-B Panic Room on the back steps. The entrance to the Zom-B Panic Room is in downstairs, and you’ll find the vehicle blueprint there.
Cryonic Commando (Antique Car + Snowmobile) – Located on the north side of West Ridge, look for a white barn near a fireworks stand. You’ll find the Cryonic Commando blueprint inside of the barn on a stack of hay.
Kill-O-Watt (Go Kart + Shopping Kart) – Located at the go-kart track in the center of Miami Boardwalk in Willamette Memorial Megaplex, complete the race twice to unlock the central cage to access the blueprint.
MowerHawg (Mower + Kid’s Bike) – Located in Ye Olde Toy Box in Medieval Town in Willamette Memorial Megaplex, you’ll find the combo vehicle blueprint on the counter.
Sling Rot (Hearse + Tow Truck) – Located on the south side of the Emergency Shelter in Old Town, you’ll find the vehicle blueprint on the side stairs of the church next to the cemetery.
Tread Maker (Tractor + Wheelchair) – Located in the garage at Hudson’s Dairy Farm in Tom’s house in Case 5, during the story you’ll have a mission to return to the farm to find another character. Look in the bedroom closet upstairs and use the Spectrum Analyzer to find a hidden room containing the Farm Keys. Use the Farm Keys to unlock the Garage and access the Tread Maker vehicle blueprint.
Warmonger (Military ORV + ATV) – After you leave Willamette Memorial Megaplex at the start of Case 2, follow the story until you meet Jessa next to a black car at the exit in the parking garage. You’ll find the combo vehicle blueprint on a black sedan.
Have issues finding any of these, or have any corrections or clarifications? Let me know in the comments below.