The majority of people believe that Dogecoin will reach $1 this year due to the support of Elon Musk. Elon Musk has endorsed Dogecoin in several of his tweets, which has had an impact on Dogecoin's price hike. However, there is no guarantee that Dogecoin will reach $1 or even reach the moon.
When Dogecoin was in a very bad position and its price was very low. But Elon Musk support for Dogecoin has increased and it once reached a peak of $0.78. From this position everyone believes Dogecoin will hit $1. But nothing incredible can happen.
As to whether Tesla will accept dogecoin as payment, there is currently no certainty. In fact, Elon Musk once announced that consumers could buy Tesla cars with Bitcoin. However, it is not yet clear whether Tesla will accept Dogecoin as payment in the future.
Not sure if Tesla will allow participation in DogeCoin transactions. If Elon Musk could start trading DogeCoin with his Tesla company then it could be in $10-$20 instead of $1. But there is still no guarantee whether the transaction will start. But if you want you can keep some investment here.