Up to Speed was a virtual representation of one of Ezio Auditore da Firenze's genetic memories, relived by Desmond Miles in 2012 through the Animus.
Ezio Auditore approached a thief who claimed to have heard stories of of the Assassin. When the thief challenged him to race, Ezio accepted.
- Thief: Ezio Auditore? Perdiana! (Wow!) I've heard stories about your speed! Let us see if you can match mine!
The thief was beaten at his own race.
The thief challenging Ezio to a race
Ezio racing across the ruins