Here are 2 new concepts (I'm trying to come up with one you really like, then I can play with colors):
#24 & similar - focusing on speed, with clock
#27 & similar - same concept, but with hourglass
I'm focusing on speed/time 'cause I think this is what we're talking about, but please let me know if I'm doing/thinking wrong.. after all, english isn't my primary language!
I'll wait for next input.
Thank you very much,
Giorgia.