Positioning Vivakor in the Support Infrastructure Needed for Usage of Autonomous Vehicles LAS VEGAS, NV / ACCESSWIRE / February 22, 2021 / Vivakor, Inc. (OTC PINK:VIVK) ("Vivakor"), a socially responsible operator, acquirer and developer of clean energy technologies and environmental solutions, primarily focused on soil remediation, today announced its exclusive agreement with TBT Group, Inc. ("TBT Group"), a leader in the creation of technology using piezoelectric materials, to license its...