Jason Calhoon's Cafe Van Go - the enticingly red van you'll find parked in front of Bookmans Grant most mornings and early afternoons - will now be closed Saturdays and Sundays as we all wait for the weather to cool down. Cafe Van Go will still be open Monday through Friday, 7 a.m. to 3 p.m., serving up some of the best espresso and coffee in Tucson. Stopped by to give it a "go" yet? We hear the espresso shots and the Americano are particularly ace.