> motorcycle
It should be tracked to some degree. If the motorcycle is designed for street use (compared to track or dirt only) then there are several interested parties that need to know about some sort of transaction (insurance companies, DMV, state sales tax). There's some difference between "my insurance company knows I bought a GSXR" and "Visa knows I bought a GSXR", but less than you'd think. Even if the insurance company doesn't sell the data, you're likely to buy a new helmet with the Visa, increase browsing of motorcycle related webpages, or have some new speeding tickets.
You launder money to obscure the source of the cash. If you sell, for example, $200k worth of cocaine and you try to deposit it all through one of your fronts you will be caught.
This isn't difficult data science.
"Laundering money" means that criminals make transactions in order to use cash they have from their illicit gains within the general economy, ie get it into a bank account and being able to declare where they got the money from.
> the reality is that if you withdraw $8k to pay for a motorcycle and hand it to a guy that sells you the motorcycle and then deposits it straight into his own bank account then yes, this is quite obviously tracked.
Not at all.