A new way to beat the summer heat: customized ice cream sandwiches from the Coolhaus food truck. The mix-and-match options are mind-boggling. Choose a cookie (oatmeal, red velvet, potato chip and butterscotch, double chocolate chip with sea salt) and pair it with an ice cream (spiked egg nog, brown buttered candied bacon, beer and pretzels). Not adventurous? They offer Tahitian vanilla ice cream and chocolate chip cookies. Vegan? They’ve got you covered.