The flow of goods along the west coast is staggering - and so is the traffic on its choked highways. So many trucks are moving goods back and forth, burning up gas, causing pollution and wearing down tires and roads - maybe there is an easier way. The California Aqueduct runs rights along highway 5. Don't ask me, I just think these things up! Note on spelling: It turns out that Aquaduct is a pretty common misspelling of this term - and no wonder, since the word derives from the latin "Aqua" for water.