It's much more likely that these drivers' children will move onto "intelligent work." The drivers themselves -- the ones for whom it's a primary source of incom

It's much more likely that these drivers' children will move onto "intelligent work." The drivers themselves -- the ones for whom it's a primary source of income, anyway -- are mostly stuck in a financial rut. They don't exactly have the spare cash sitting around which would allow them to just learn some "creative work." Getting bills paid and food on the table for their family will take priority.