Plano is home to more than 500 corporate and regional business headquarters — Toyota North America, JPMorgan Chase, Liberty Mutual, and Frito-Lay among them — which means a lot of Plano vehicles spend their days in corporate parking garages, not driveways.
With a 2025 population estimated near 299,000, Plano is Texas's ninth most populous city and one of the most corporate-dense areas in North Texas, anchored by Legacy West and Legacy Town Center. That concentration of daytime office workers means a lot of Plano commuter vehicles sit in parking garages and surface lots for eight-plus hours a day — collecting concrete dust and garage residue rather than driveway pollen and tree sap.
Plano is also the only city in this part of Collin County with DART light rail access, so vehicles parked at park-and-ride lots face their own exposure pattern — long stretches of direct sun in open-air lots, often for the entire workday.