Martinis and champagne are also sometimes chilled and served using ice luges. Ice luges have also been used for the consumption of oysters. Ice luges can also be homemade, and molds are available to consumers for doing so. For example&colon; street luges, gravity racers, and snow boards. Ice luges have also been described as a type of drinking game. There are also various adventure courses, dirt bikes, summer luges etc. These eventually evolved into bobsleighs, luges and skeletons.