The trucks gain/gather 'speed' as they drive down the hill. = The trucks pick up 'speed' as they drive down the hill. [=the trucks go faster as they drive down the hill]
He types at a 'speed' of about 50 words per minute. = His typing 'speed' is about 50 words per minute.
Let me 'bring you up to speed' on our plans. [=let me tell you about the changes in our plans]
(..) The X Tens are online. Gentlemen, I am now about to send a signal from this laptop through our local ISP... ...racing down fiber-optic cable at the speed of light to San Francisco... ...bouncing off a satellite in geosynchronous orbit to Lisbon, Portugal. Data packets will be handed off (..)2008 TvShow: The Big Bang Theory Title: The Cooper-Hofstadter Polarization Season: 1 Episode 9