to me it seems the funds are not enough...in your case i would show 25000$(education) + 10000(for surviving in Canada for 1 year) so atleast 35000$ liquid cash...and you mentioned you are showing 30000$ and value you will get for your car...if it is possible try getting a loan for 10000$ as it will show you have enough assets available for you. Because money in your bank and the loan you will get is liquid money(readily available) compared to your car which may sell or not at the price mentioned. It is important to convince the visa officer when it comes to funds.
Hope that helps and best of luck for your application which is in progress.
Hope that helps and best of luck for your application which is in progress.