Thank you for your question.

You may be thinking of Budweiser, which has historically used Clydesdales in its ads. Here is one from the early 90's:

http://video.search.yahoo.com/video/play;_ylt=A2KLqINvP_NPQEcAeQf7w8QF;_ylu=X3oDMTBrc3VyamVwBHNlYwNzcgRzbGsDdmlkBHZ0aWQD?p=budweiser+ad+clydesdale+snow&vid=16336C67388225E6019A16336C67388225E6019A&l=&turl=http%3A%2F%2Fts4. mm.bing.net%2Fvideos%2Fthumbnail.aspx%3Fq%3D4714019287138319%26id%3D28d28780a2c1d098a44a08b0c76f281c%26bid%3DmgHmJYI4Z2wzFg%26bn%3DLargeThumb%26url%3Dhttp%253a%252f%252fwww.youtube.com%252fwatch%253fv%253dGsQfi5E29nU&rurl=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DGsQfi5E29nU&tit=1992+Budweiser+Beer+Clydesdale+Horse+Commercial&c=3&sigr=11ares1vg&

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