How do you transfer duck eggs that have had a broody duck sitting on them?

We are wondering how do you transfer a batch of duck eggs. Our Muscovy duck has been sitting for the past two weeks and unfortunately our dog took the eggs on her. We have been offered a batch of eggs that have been under someone else's duck for 2 weeks. We are wondering how would you keep the eggs warm as we would be travelling 30 mins for them. Thanks