User blog comment:TdrrTom/Ridonculous Race: Brazil Review/@comment-4136655-20150912001256

The Speed Bump is a challenge that occurs after a non-elimination leg. The team that comes in last at a non-elimination leg (since Season 12) must preform a Speed Bump (typically a small task) at some point (typically before a Detour, Roadblock, or miscellaneous task) before continuing racing. It appears they don't exist for this season, since Laurie & Miles did not face one in Brazil.

Also on the topic of Laurie & Miles' elimination, a similar situation happened in the third season of the Amazing Race (US), where a team came in first and were penalized, and all other teams checked in during the penalty time. Just to point out, there have been teams in the Amazing Race that have come in last in a non-elimination leg and then be, unfortunately, eliminated in the next leg.