i m choosing my surfboard based on my car...

as silly as it sounds my car is one of the parameter I take into consideration now that i want to buy my first surfboard.
Here's a bit of history. Started surfing 3 months ago and i've been surfing basically every weekend and even more since then. Started on a foamie for the first 3 lessons, moved to a minimal 7.9 and jumped around that all the way down to a 7.0 egg. I can popup kinda ok, catch some unbroken waves and can do some basic turns. Now, im always renting my board, which is great cause i can try different shapes/size and im not spending too much money. The big limit is due to the fact that i can surf only at the same beach (or other places where you can rent) at specific time and days and most than anything else, my gf is getting kinda tired of getting her tan at the same beach
Now, i went looking for a surfboard to buy and i suddenly realized that we have a car which is not really suitable to carry a surfboard. There is no way that we are going to put a roof rack on it. The soft rack isn't really an option either and we couldn't find any suction rack to be used on this model. If i had a normal car i would probably buy a decent size minimal and go with it. But i can't.
We went to this shop and tried to fit inside the car some surfboard. The best we could do was a 6.4 fish. Keep in mind im 6.0 feet and around 160 pounds.
I've never tried something that small, and tomorrow im going to, but i was wondering if any of you could share a bit of their wisdom and honestly telling me what they think about it. I know there will be frustration, i know my wave count will go down big time but then again im willing to put some extra effort in and being able to simply drive and try different beaches everytime i want. Realistically speaking, is it doable? (i think it is, and i believe i can do it, just want to hear others opinions as well).
So, what say you?
Thanks a lot
PS:selling this car or buying another one is not an option.
Here's a bit of history. Started surfing 3 months ago and i've been surfing basically every weekend and even more since then. Started on a foamie for the first 3 lessons, moved to a minimal 7.9 and jumped around that all the way down to a 7.0 egg. I can popup kinda ok, catch some unbroken waves and can do some basic turns. Now, im always renting my board, which is great cause i can try different shapes/size and im not spending too much money. The big limit is due to the fact that i can surf only at the same beach (or other places where you can rent) at specific time and days and most than anything else, my gf is getting kinda tired of getting her tan at the same beach

Now, i went looking for a surfboard to buy and i suddenly realized that we have a car which is not really suitable to carry a surfboard. There is no way that we are going to put a roof rack on it. The soft rack isn't really an option either and we couldn't find any suction rack to be used on this model. If i had a normal car i would probably buy a decent size minimal and go with it. But i can't.
We went to this shop and tried to fit inside the car some surfboard. The best we could do was a 6.4 fish. Keep in mind im 6.0 feet and around 160 pounds.
I've never tried something that small, and tomorrow im going to, but i was wondering if any of you could share a bit of their wisdom and honestly telling me what they think about it. I know there will be frustration, i know my wave count will go down big time but then again im willing to put some extra effort in and being able to simply drive and try different beaches everytime i want. Realistically speaking, is it doable? (i think it is, and i believe i can do it, just want to hear others opinions as well).
So, what say you?
Thanks a lot
PS:selling this car or buying another one is not an option.