Zūm provides a safe, reliable and flexible child transportation service that reduces annual costs by up to 40 percent, helping schools put funds back into education programs REDWOOD CITY, Calif., April 30, 2019-- Zūm, the leading logistics platform for safe and reliable rides for school districts and busy families, today announced it secured additional funding from new investor Citi Ventures to help double its national footprint by 2020, starting with newly available service in Dallas, Texas.