The Vac-Con Combination Machine combines the flexibility of a two-engine design to get the toughest jobs done right. The efficient design allows the chassis engine to drive either the three-stage fan or positive displacement blower vacuum system, saving fuel and general wear and tear in the long run. Using a standard hydrostatic drive, this design can engage the unit’s powerful vacuum. Its modular polyethylene water tanks allow the user to choose from a variety of water capacities up to 1,500 gallons. An array of options is available. 904/284-4200; www.vac-con.com; Booth 938.