The Internal Revenue Service (IRS) allows you to claim your elderly parent as a dependent on a tax return as long as no one else does. If you choose to claim an exemption for your parent, you must also ensure that you are not an eligible dependent to another taxpayer. This restriction is effective even if the taxpayer who can claim you as a dependent chooses not to.
The Internal Revenue Code does not limit the number of deductible charitable donations you can make in a single tax year. The same rules apply whether you donate one car or 500 cars. However, you must ensure that you satisfy all requirements for each separate vehicle donation.