Since the dataset is generated by a simulation, you are free to use it under the conditions of the MIT license.
The full dataset is 1.3T in size. Most of this is the LiDAR pointclouds. You can download it from Academic Torrents or via https as described below.
The dataset can be downloaded in parts
You can download and set up the base dataset with
cd my/data/dir/
wget https://files.kondas.de/carlanomaly/base.tar.gz
tar -xzf base.tar.gz
Afterwards, download additional data with
cd my/data/dir/
wget https://files.kondas.de/carlanomaly/<name>.tar.gz
tar -xzf <name>.tar.gz