Realistic Sketch-Style AI Video Production

I need an AI video producer to create 3-4 short, realistic action clips for marketing purposes. Each clip should be a few seconds long and in a sketch or paintbrush style.

The scenes include:
- An airplane crash in a snowstorm
- Commuters piling into a subway car
- Fire trucks and ambulances in a snowstorm

Requirements:
- High-quality, realistic videos
- Sketch-style visuals

Please provide detailed descriptions and images. Ideal skills and experience:
- Proficiency in AI video generation
- Strong portfolio in sketch-style animations
- Experience in creating marketing content