Running multiple landing pages...good idea?

Evening all,

So I am trying to determine exactly who my target audience is, and to do this I thought it would make sense to run 3 tailored google ad campaigns along side different landing pages using word press.

For example as the general target market is car owners, 3 of these groups could narrow down to be:

Track day enthusiasts / car owners

Classic car owners

Sports cars owners

By running the same amount of budget in each ad, I was hoping to run these for 3 months and view the results afterwards by analysing the amount of people who have signed up and using google's analytics.

Would anybody have any experience in this area? if so is this a sensible idea or not?

Thanks