This video is cool because it is not that usual to have snow in San Antonio, TX. According to Wikipedia:
San Antonio receives about a dozen subfreezing nights each year, typically seeing snow, sleet, or ice about once every two or three winters, but accumulation and snow itself are very rare. Winters may pass without any frozen precipitation at all, and up to a decade has passed between snowfalls. According to the National Weather Service, there have been 32 instances of snowfall (a trace or more) in the city in the past 122 years, about once every four years. Snow was most recently seen on December 7, 2017, when 1.9 inches (5 cm) of snow coated the city.
So this video was recorded during that rare last December snow fall with accumulation.
How about verified Wikipedia facts?!
Ain't that cool?