The contract between Timmy and Jennifer is not valid for legal claims because there are no ways to prove the terms they agreed to for the sale/purchase of the car.
What is a valid contract?
When we enter into an agreement with another person to carry out any commercial activity, we generally must create a document in which all the terms and conditions of the contract are established in order to bind both parties to comply with the contract.
If another type of contract is made, for example by telephone, spoken or other modality that does not have ways of verifying what was agreed, it can be considered as invalid contracts.
Based on the above, the contract that Jennifer made with Timmy over the phone is invalid because there is no way to check what they agreed to.
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