Testing the HORSEPOWER: valet mode, black key, and RED KEY!!! Updated on By Wes Comments Off on Testing the HORSEPOWER: valet mode, black key, and RED KEY!!! Republished by Blog Post Promoter Republished by Blog Post Promoter Tweet By Wes You May Also Like 1970 Mercury Cyclone Spoiler II 1 of 1 & 429 Engine Sound 1970 Challenger T/A First Start in Years!