As a matter of fact most of the car companies allow deliveries of new cars only to the stock yard and not to the show rooms
If the showroom and stock yard are conjoined there is no chance of your car being driven for more than 15 kms (strictly for PDI by the dealership) this goes good with 99% of the cars and sometimes when there is a lack of test drive vehicle and if the sales feel they have a prospective customer they do offer new cars for test drive but not for more than 1 customer
All this knowledge is through the experience of my friend who works for a famous car company as assistant sales- south zone
In your case, if i were you i would not accept anything more than 20 kms on the ODO which means its definitely used for something other than a PDI purpose and you have every right to reject it, but 90% of the customers accepts it - because its a joyous moment
and most of such facts might be ingnored by the them