300 k can be reached with 17 YYZ-HKG roundtrips, at $1200 each trip at Chinese TA... it comes to about $20,000
One year Volvo lease is valued at maybe $400 x 12 = $4800
So $4800 bonus for $20,000 spending... 24%, not bad.
Also, at 2 cents a mile... 300k is worth $6000.
So a grand total of $10,800 for $20,000 spending... hmm, now it's >50%
Can AC be this generous? Is my math wrong somewhere?