Dockyard assets low poly models very optimized assets. It is very useful for mobile games. I already created a sample Race track scene with proper lightmapping.

Package includes:
4-Container sets,
8-single Containers with 4 different type of colors.
2-wooden boxes,
2-drums,
2-storage pallet.
10- 1k textures.
Car texture 1 -512*512( Tris 1168)
Race Start and End Marks textures 2- 512*256

Every asset has a prefab set up for you. You can create your own Dockyard area using this assets package.