I'm not really sure if this should go here or off-topic, but I think it should be here  

I was wondering if there's a way I could deposit bitcoins to a wallet, address, and I wouldn't be able to withdraw them until I reach a certain sum
I'd like to start a fund to save money for a car, however, I always end up spending my money instead of saving it  
Is there a way to set something up, where I could be able to withdraw the coins only when the balance of the wallet reaches 10BTC or something like that?
For example, generating a password that would be given to me once the balance hits 10 or something like that  

I dont think there is a wallet like that. Hahah not sure but I've never heared one before. Maybe what you can do is contact the support about that so they can make some adjustments in their platform. But I think it will take some time before they can do that. Another thing you can do is if you have a wife, ask her to create a wallet and she will keep your BTC until it reaches to your goal price whis is 10BTC hahaha Just a suggestion