Brands roll with stoner 'holiday' as pot legalization grows

Potheads have for decades celebrated their love of marijuana on April 20, but the once counter-culture celebration that was all about getting stoned now is so mainstream Corporate America is starting to embrace it.

Businesses inside and outside the multibillion-dollar cannabis industry are using April 20, or "420," to roll out marketing and social media messaging aimed at connecting with marijuana enthusiasts.

Tomorrow, Lyft is offering a $4.20 credit on a single ride in Colorado and in select cities in the U.S. and Canada.

Carl's Jr. is using a Denver restaurant to market a hamburger infused with CBD, a non-intoxicating molecule found in cannabis.

Marketing consulting company Metaforce co-founder Allen Adamson says big brands that need to appeal to a wide audience are unlikely to embrace "420" marketing.