I'm still thinking the Speedbump comes first before the push cart because the teams looked TOO RELAXED (Amy and Maya yo lol) walking towards the market with the Speedbump clue. And there's like 5 teams together at the point, so it make sense if teams took a taxi and alighted at different points of the market and then mad dash to the Speedbump/clue area.
Keith and Whitney also finished the pushcart task before Brooke/Robbie and a whole bunch of teams, so it make sense if they maintained their lead from the Speedbump/ARI instructions to the confrontation scene?
They're not giving away what happened at the Detour or Roadblock much... but I think a quick deduction will tell us which Detour is the faster/better one and ultimately separating the teams into two packs going into the Roadblock IMHO...