No Cross Attention between Seq Embedding and E_map

[haibao-yu]

Thanks for your great work! I have a question about your implementation:

• In Figure 3, the embeded road map is interacted with Seq Embedding and then added to input feature. However, I find the embeded road map is directly added to input feature in your implementation. Can you check it is right implementation?

https://github.com/cure-lab/MagicDrive/blob/6038a24de9fc4df641a9775aab3f735a3c590589/magicdrive/networks/unet_addon_rawbox.py#L743-L850