As gas soars to its highest price in 7 years, a shortage of tank truck drivers may leave some stations without any this holiday weekend

• Gas prices are at an almost 7 year high, at about $3.10 a gallon for regular.
• An estimated 47 million Americans are expected to travel by car this weekend, AAA reported.
• They may not find gas at stations due to a tank truck driver shortage, CNN reported.

Gas prices will be the highest they've been in nearly seven years and some gas stations may not even have any, CNN reported.

The average cost for a regular gallon is the highest since October 2014 at about $3.10.

GasBuddy Head of Petroleum Analysis Patrick de Hann said that the high price is likely to remain high after the holiday weekend.

Additionally, a shortage of tank truck drivers who drive gas to stations could mean some stations may not have any gas at all.

Tom Kloza, global head of energy analysis for the Oil Price Information Service, told CNN the shortages are spread out across the country.

"It used to be an afterthought for station owners to schedule truck deliveries. Now it's job No. 1," Kloza told CNN. "What I'm worried about for July is the increased demand works out to about 2,500 to 3,000 more deliveries needed every day. There just aren't the drivers to do that."

De Hann said the demand for oil is still the same, so the lack of gas at stations is simply due to the shortage of drivers.

More than 47 million Americans are expected to travel by car this July 4 weekend, AAA is forecasting.

Klonza told CNN that not finding gas at stations could mean people start topping off their tanks more frequently, which may in and of itself cause a shortage down the line.