Considering the growing trend of using cargo bikes for family transport, what novel solutions would you propose for safely and comfortably transporting family pets of various sizes, from small cats and dogs to larger breeds or even exotic animals, while ensuring their well-being and minimizing the risk of accidents or escapes, and what features or modifications would you prioritize in a cargo bike designed specifically for pet transport, such as custom enclosures, ventilation systems, or pet-specific safety harnesses, and how would these designs balance the needs of both the rider and the pet, while also addressing potential regulatory and infrastructure challenges in urban environments, and what role could technology play in enhancing the safety and comfort of pet transport on cargo bikes, such as integration with pet wearables or smart enclosures that monitor temperature, humidity, and other environmental factors, and what opportunities or challenges arise when considering the use of electric or assisted cargo bikes for pet transport, particularly in terms of increased speed and range, but also potential noise or vibration impacts on the pet.