Not visionary enough. Gotta get rid of the 3 while we're at it. I wouldn't like 300,000 m/s either. The speed of light should be 1 million new units per second. The new unit would be very close to a foot, because the speed of light already equals 983,571,056 feet per second.
If everyone used furlongs-per-fortnight to measure velocity, we wouldn't have these problems....
;-)