According to PennDOT spokesman Ron Young, PennDOT goes through 1.6 million gallons of paint on road projects statewide every year. As Young pointed out, you could fill two Olympic-sized swimming pools with that much paint and still have about 300,000 gallons left over. All that paint can cover 114,000 miles. To put that in perspective, the Earth has a circumference of 24,901 miles.