Road to heaven

Elmer Parolini gives us free maps to Heaven in this cartoon.  If the road to Hell is paved with good intentions, what is the road to Heaven paved with?  Gold bricks?  But that's the roads in Heaven, right?  Is there a difference between the Road to Heaven and the Highway to Heaven?

Speaking of nifty paving, check this out: A machine that paves out a carpet of bricks.