I find this sort of thing interesting as a motorcycle owner so thought I'd post some highlights.
The fella in question is a courier called Stan, who was in his early 60's at the time of the article.
His list of bikes is as follows, along with the mileage he put on to each:
1983 Kawasaki GT550 - 15,000 miles
1984 Kawasaki GT750 - 184,000 - "Worst bike I ever bought"
1986 Yamaha FJ1100 - 30,000
1987 Yamaha FJ1200 - 14,000 in 3 weeks - returned to the dealer due to excessive vibration
1987 Yamaha FJ1200 - 90,000
1988 Honda VFR750 FJ - 140,000
1989 Honda VFR750 FK - 149,000 - knocked over at an airport, then traded in
1990 Honda VFR750 FL - 852,000

1996 Kawasaki ZZR1100 C3 - 252,000
1997 Kawasaki ZZR1100 D1 - 60,000 - written off
1998 Honda Blackbird - 410,000
2001 Honda Blackbird - 205,000 - current bike at the time of the article
Some mega mileages there, just goes to show those who worry about their bikes getting to 20 or 30k miles have only just scratched the surface.
Some other info:
Oil and filter changed every week - using Honda oil filters but 10w40 car oil - the cheap stuff (that's what he used in the 852,000 mile VFR!!)
RK chains last far longer than any others - usually 80,000 miles
A Scottoiler is used to keep the chain 'saturated in oil'