BMW E60 M5 vs Mercedes C63 AMG top speed fun 2

Stock e60 M5 with limiter removed and C63 with sls engine built and tuned by PP-Performance just having some top speed fun. C63 has 650hp. NOTE: THIS IS NOT A RACE. C63 is much much faster. c63 let OFF MULTIPLE TIMES to let the m5 catch up and both cars be at top speed and then accelerate.