500,000 miles

It's hard to be exact but from my records I reckon I've just completed half a million miles on motorcycles. I started riding in July 1974 and I've owned only 16 bikes. This means an average of 12,800 miles per year and 31,250 miles per bike (not bad since none of them were new). So what next? I currently ride about 15,000 miles a year so 1 million kilometres (621,504 miles) should be achievable in about 8 years. I might hit three quarter of a million miles if I'm still riding in my mid 70's but a million seems out of reach unless I'm still going into my 90's, but you never know.  

My older FJ1200 just about to go round the clock