|
They are filled with water or sand in some cases.
The water filled ones have some sort of salt additive or something (I really am not sure what its made of but salt makes sense) that prevents them from freezing over.
Also I believe they only use water filled ones in states that generally don't freeze, while sand is used up here in the great white north.
__________________
2010 Chevrolet Camaro SS - was daily driver, now toy
2020 Alfa Romeo Giulia Quadrifoglio - Daily Driver
2017 Mercedes Benz GLE 350 - Wifes Car
2008 Chevy Silverado 2500 HD LT 6.0 - Tow Vehicle
1991 Alfa Romeo 164S - Project Car
1994 Volkswagen Golf - Race Car
"Like" my race team on Facebook: http://www.facebook.com/farfrumwinnin
|