[Sebb767]

Your average gas pump seems to pump about 38l/min [0]. Using a rather inefficient car with an usage of 10l/100km, you get an added range of 22800 km/h, or 14250 miles/h. So, still a factor 14 to go.

[0] https://www.quora.com/What-is-the-flow-rate-of-gasoline-stat...