WRT the first quote the road business in the USA is extremely corrupt along the lines of cellphone battery life always being advertised as about 3 times reality

WRT the first quote the road business in the USA is extremely corrupt along the lines of cellphone battery life always being advertised as about 3 times reality, etc, so it would be assumed the claims are outright false and the maint cost will be higher and only last 1/3 the lifetime of asphalt. Its an interesting cultural problem that the claims might actually be true in that that country! WRT the second quote, that doesn't answer the question. If you can't mix the heavy stuff from the distillation column with gravel and pave roads with it, you'll have to ... crickets ... Bonfire it? Dump it in the ocean? Pour it in a pit and leave the cleanup to someone else? Ship it far away for someone else to use it as asphalt? Damaged roads are very expensive ecologically. Saving the planet $5 on pavement is a good way to charge the planet $1000s in tie rods and suspension components, but out of sight, out of mind...